Advertisements
Advertisements
प्रश्न
In J.J. Thomson e/m experiment, a beam of electron is replaced by that of muons (particle with same charge as that of electrons but mass 208 times that of electrons). No deflection condition is achieved only if
पर्याय
B is increased by 208 times
B is decreased by 208 times
B is increased by 14.4 times
B is decreased by 14.4 times
उत्तर
B is increased by 14.4 times
APPEARS IN
संबंधित प्रश्न
The ratio of the wavelengths for the transition from n =2 to n = 1 in Li++, He+ and H is ______.
The electric potential between a proton and an electron is given by V = V0 In `("r"/"r"_0)`, where r0 is a constant. Assume that Bohr atom model is applicable to potential, then a variation of radius of nth orbit rn with the principal quantum number n is
Give the results of Rutherford alpha scattering experiment.
Write down the postulates of Bohr atom model.
What is distance of closest approach?
Explain the J. J. Thomson experiment to determine the specific charge of an electron.
Derive the energy expression for an eletron is the hydrogen atom using Bohr atom model.
Discuss the spectral series of hydrogen atom.
In the Bohr atom model, the frequency of transitions is given by the following expression
v = `"Rc" (1/"n"^2 - 1/"m"^2)`, where n < m
Consider the following transitions:
Transitions | m → n |
1 | 3 → 2 |
2 | 2 → 1 |
3 | 3 → 1 |
Show that the frequency of these transitions obey sum rule (which is known as Ritz combination principle).
- A hydrogen atom is excited by radiation of wavelength 97.5 nm. Find the principal quantum number of the excited state.
- Show that the total number of lines in emission spectrum is `("n"("n - 1"))/2`.
Compute the total number of possible lines in emission spectrum as given in(a).